Remove six.moves

Replace the following items with Python 3 style code.

- six.moves.configparser
- six.moves.StringIO
- six.moves.cStringIO
- six.moves.urllib
- six.moves.builtins
- six.moves.range
- six.moves.xmlrpc_client
- six.moves.http_client
- six.moves.http_cookies
- six.moves.queue
- six.moves.zip
- six.moves.reload_module
- six.StringIO
- six.BytesIO

Subsequent patches will replace other six usages.

Change-Id: Ib2c406327fef2fb4868d8050fc476a7d17706e23
Implements: blueprint six-removal
Signed-off-by: Takashi Natsume <takanattie@gmail.com>

nova/api/metadata/password.py

@@ -13,7 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from six.moves import range
 from webob import exc
 
 import nova.conf